Birth: 1738 East Dean, Chichester, Sussex, UK
Father: John Croucher (Crowcher) 1699-1767
Mother: Martha Salter (Saltter) 1697-a1738
Christening: 19 October 1738 All Saints, East Dean, Chichester, Sussex, UK
Death: October 1838 East Dean, Chichester, Sussex, UK
Burial: 31 October 1838 All Saints, East Dean, Chichester, Sussex, UK
Chistening of Mary Crowcher in the IGI on 19 October 1738 in Eastdean Near Chichester, Sussex, parents John and Martha Crowcher, and her death on 31 October 1738.
There is also an entry for Martha Crowcher with the same parents on the same date, so I assume they were twins.
There is also an entry in the Sussex Burial Index for Mary Croucher, daughter of John and Martha, on 31 October 1738 in All Saints, East Dean.